How to access /router/translate-path without anonymous content access

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Package

next v1.6.3 (Drupal module)

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We work on a D10 site that has "View published content" disabled for Anonymous users.

JSON API data is retrieved fine thanks to a key set up using https://www.drupal.org/project/key_auth for particular API user.

However, calls to /router/translate-path do not work.

• If key_auth is active, it returns "The used authentication method is not allowed on this route."
• If key_auth is not active, it returns "The 'access content' permission is required."

With what kind of authentication - can we query /router/translate-path for content that is not open to anonymous users?